Many men notice subtle changes as they move into their 40s and beyond.
Energy levels aren’t quite what they used to be. Recovery after exercise takes longer. Motivation, focus, and libido may fluctuate more than before.
Often the first thing people blame is testosterone.
While testosterone does naturally decline with age, it’s rarely the only hormone influencing how men feel. In reality, several hormones — including cortisol and insulin — interact to affect energy, metabolism, mood and long-term health.
Understanding what’s happening behind the scenes can help men make practical changes that support hormone balance as they age.
The Truth About Testosterone
Testosterone levels do gradually decline over time. On average, levels decrease by around 1% per year after the age of 30.
However, this natural decline doesn’t automatically mean a man will experience fatigue, low libido or weight gain.
For many men, the bigger issue is that lifestyle factors amplify the hormonal changes.
Common contributors include:
• Chronic stress
• Poor sleep
• Nutrient deficiencies
• Highly processed diets
• Lack of resistance training or muscle activity
When these factors are present, testosterone production can drop further — even in relatively young men.
The good news is that many of these influences are modifiable through lifestyle habits.
The Cortisol Creep
Cortisol is the body’s primary stress hormone. In the short term it helps you stay alert and respond to challenges.
But when stress becomes constant — whether from work pressure, poor sleep, financial strain, or a busy lifestyle — cortisol levels can remain elevated throughout the day.
Over time, chronically high cortisol may contribute to:
• Disrupted sleep
• Increased belly fat
• Suppressed testosterone production
• Fatigue and irritability
• Weakened immune function
Stress management isn’t just about mental wellbeing. It’s also essential for maintaining healthy hormonal balance.
Insulin, Metabolism & Inflammation
Another hormone that plays a major role in men’s health is insulin, which regulates blood sugar and energy use.
Insulin resistance can gradually develop when:
• Physical activity decreases
• Meals are heavily processed or high in refined carbohydrates
• Eating patterns become irregular
• Late-night snacking becomes common
When insulin remains elevated for long periods, cells become less responsive to it. This can lead to:
• Weight gain around the abdomen
• Energy crashes after meals
• Sugar cravings
• Mood fluctuations
Over time, insulin resistance increases the risk of type 2 diabetes, cardiovascular disease and hormonal imbalance.
Signs Your Hormones May Be Out of Balance
Hormonal shifts don’t always show up as dramatic symptoms. Often they appear as gradual changes.
Some common signs include:
• Reduced libido
• Lower motivation or drive
• Brain fog or reduced mental stamina
• Increased belly fat despite similar eating habits
• Difficulty sleeping or staying asleep
• Persistent fatigue, especially in the morning
• Feeling emotionally flat or less engaged
If several of these symptoms appear together, it may be worth reviewing lifestyle habits or discussing testing with a healthcare professional.
What Can Men Do to Support Hormone Health?
The good news is that hormones are highly responsive to daily habits. Many men see noticeable improvements through simple foundational changes.
1. Strength Train Regularly
Resistance training two to three times per week helps stimulate testosterone production and supports muscle mass as men age.
2. Prioritise Sleep
Aim for 7–8 hours of quality sleep. Avoid screens late at night and create a consistent bedtime routine.
3. Eat for Hormone Support
Focus on nutrient-dense foods that support hormone production:
• Healthy fats (eggs, oily fish, olive oil, nuts)
• Zinc-rich foods (pumpkin seeds, shellfish, meat)
• Magnesium sources (leafy greens, nuts, seeds)
• Adequate protein at each meal
4. Reduce Ultra-Processed Foods
High sugar intake, refined carbohydrates and excessive alcohol can disrupt blood sugar balance and hormone regulation.
5. Manage Stress Daily
Regular movement, time outdoors, breathing exercises or hobbies can help lower cortisol and support overall wellbeing.
Key Takeaway
Hormonal changes with age are normal, but they are not entirely out of your control.
How you sleep, eat, train and manage stress can significantly influence testosterone, cortisol and metabolic health.
Supporting these foundations often leads to improvements in energy, mood, motivation and long-term wellbeing.
FAQ: Men’s Hormones & Ageing
Do testosterone levels always drop with age?
Yes, testosterone typically declines slowly with age, but lifestyle factors strongly influence how noticeable the changes are.
Can stress lower testosterone?
Chronic stress can increase cortisol levels, which may suppress testosterone production over time.
What foods help support testosterone?
Foods rich in healthy fats, zinc, magnesium and protein can support hormone production.